Kastar Magic Professional NP-F980Exp Battery, 7.4V 8700mAh, can be charged w/ Micro USB with 5Volt 2A adapter: i) A USB battery: Directly provides high-speed charging from the wall and on-the-go! Convenience at your finger tips! ii) 5V 2.1A Output: Can be used as a Power Bank iii) Easily know the battery status any time with 4 LED Light on the battery. This AC wall charger with foldable flat pin for easy storage. The charger Input: AC 100~240V 50~60Hz; Output: DC 8.4V 600mA. LED indicate: Red light for charging; Green light for standby or full-charge.